X x x-xx



Oct. 23, 1928.

w. H. ROBERTSON CASH REGISTER Filed Aug.16, 1926 3 Sheets-Sheet 1 ruler t 02 William H. Robertson Oct. 23, 1928.. 1,688,940

w. H. ROBERTSON CASH REGISTER Filed Aug. 16, 1926 3 Sheets-Sheet 2 William H.R rtlon By M Oct. 23, 1928. 1,688,940

' -w. H. ROBERTSON CASH REGISTER Filed Aug. 16, 1926- s Sheets-Sheet s gvwmflo'o William H. Robertson B YMW Patented Oct. 23, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM H. ROBERTSON, OF DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REG- ISTEB COMPANY, OF DAYTON, OHIO, A CORPORATION OF MARYLAND;

CASH REGISTER.

Application filed August 16, 1926.

This invention relates to cash registers, and more particularly to the type shown and described in Letters Patent of the United States to Kettering and Chryst, No. 1,13,-

061, issued April 27, 1915, to which reference may be had for a complete description oi the parts of the machine which do not relate directly to the present invention.

The object of this invention is to provide an improved means for controlling the printing of totals and subtotals,

Another object of this invention is to provide novel means to control the machine for adding, totalizing and sub-totalizing operations.

Another object of the present invention is to provide a novel totalizer engaging and disengaging cont-rolling mechanism.

With this and incidental objects in view,

the invention consists of certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred form of embodiment of which is hereinafter described with reference to the drawings which accompany and form part of this specification.

Of said drawings:

Fig. 1 is a cross-section taken through the machine and Sl10\'S the amount differential mechanism.

F 1g. 2 a right side elevation of the machine. showing the total lever, the mechanism for releasing the machine, and the totalizer nism.

Fig. 8 is a detail view of the drawer latch mechanism.

Fig. 4- is a detail view of the total lever,

together with its associated interlocking mechanisms.

Fig. 5 is a detail view of the type segment and some of the mechanism for adjusting the same.

Fig. 6 is a detail view of a part of the totalizer engaging and disengaging mecha-,

sil n in and disen a in mecha- D "O b D 3 Serial No. 129,452.

totalizer actuator during total taking operations.

General description.

This machine is of the drawer operated type, that is, the type of machine in which the release of a cash drawer permits partial operation of the mechanism, and the restoring of the drawer by the operator completes the operation and stores up enough energy in a spring for the next operation of the machine. The machine may be provided with a bank of clerks keys, a bank of transaction keys, and any number of banks of amount keys. The amount is set up on the amount keys, and a clerks key and transaction key are depressed, after which the release key is depressed for releasing the cash drawer, thereby permitting the spring to operate the machine. The amount keys con.- trol differential mechanisms for adding the amounts into a totalizer and for setting up type segments and indicators. A printing mechanism, a portion of which is shown and de'cribed herein, is provided tor recording the amounts set up on the type segments on the record strip which is retained in the machine.

A total lever is provided which has three positions of adjustment, one for adding, one for subtotal, and one for grand total operations. Then the lever is set in the sub-total position, and the machine operated, the totalizer is cleared, the amount standingon the totalizer is set up on the type carriers and printed, and then re-entered into the totalizer. lVhen the total lever is in its grand total position, the totalizer is cleared, the total is printed, but the totalizer is left standing at zero at the end of the operation.

Only so much of the mechanism is shown as is necessary to clearly illustrate the invention, a complete description of the machine being' given in the above mentioned Kettering and Chryst Patent No. 1,137,061. Detail description.

Each bank of amount keys 30 (Fig; 1), is adapted to difierentially control a segment 31 for controlling the entry of an amount into a totalizerelement There is one segment 31 for each bank of keys 30. The amount keys are held in depressed position by means of detents 33, only a part of which is shown herein as they are fully illustrated and described in the above mentioned Patent No. 1,137,061. The segments 31 are operated by means of springs 34, which are normally prevented from operating by a universal rod 35 carried by a pair of arms 36 (one only being shown). Each arm 36 is pivoted to a stud 37, one of which is mounted in the right side frame, and the other in the left side frame. The arms 36 are operated by means of a spring 38, when the drawer is released. However, the spring 38 is normally prevented from operating said arm 36, by means of a drawer latch 39 (Fig. 3) which engages a roller carried in a bracket in the rear of a cash drawer 11. The latch is held in position by an arm 4L2 (Fig. 2) which. at its lower end is provided with a shoulder 413 against which a roller 4 1 carried by an arm rests. The arm is secured to a shaft to which is also secured an arm (not shown but having the same outline as the arm 45). This arm (not shown) has pivoted thereto one end of a link 16, the other end of which is pivoted to the drawer latch 39 (Fig. 3). A spring 47 (Fig. 2) connected to the link 46 and to the machine frame tends to move said link toward the rear of the machine thus holding the roller 14 against the shoulder 43. The arm 42 is permitted to move under the influence of a spring 48 when a release key 49 is depressed. The release key 4-9 is carried by a pair of arms 50 and 51, and is held in its outer position by a spring 52 which normally holds a lug 53 on the release key against a stud 5 1 carried in one of the frames of the machine. hen the release key 49 is depressed the spring 48 causes the arm 42 to be rocked to disengage the shoulder 13 from the roller 1 1, thereby permitting the link 46 to move toward the rear of the machine and permit the latch 39 to rotate in a clockwise direction, thus freeing the cash drawer.

The cash drawer l1 is opened by a train of mechanism on each side of the machine. These mechanisms are substantially the same as those illustrated and described in the pre viously mentioned Kettering and Chryst Patent No. 1,137,061 and also a Kettering and Chryst Patent No. 1,011,966 issued on December 19, 1911. Therefore, in the present application only one of said trains of mechanism is shown, it being the one on the right hand side of the machine. This one train of mechanism will now be described.

Pivotally mounted on a stud 67 (Fig. 2) on the side frame is a Y-sha-ped lever adapted to be rocked clockwise under the influence of the spring 38 attached to the machine base and to a spring'hook 5'7 hoe on a stud 58 on an arm 61 pivoted on a stud 59 on the machine frame. The lower end of said lever 60 is held in contact with the rear of the drawer 1-1 by the spring 38.

Pivoted to the arm 61 is one end of a link 62, the other end of which is pivoted to an arm 63 secured to a main operating shaft 64. Also secured to the shaft 6% is an arm 65 having connected thereto a link 66. This link is also connected to a stud 56 (Figs. 1 and 2) on the lever 60. This lever 60 is pivoted on a stud 67 carried by the machine frame, as above described.

From the above description it will be clear that when the release key 19 is depressed and the drawer latch 39 is released. as previously described, the spring 38 rocks a portion of both trains of mechanisms including the arms 61 and 63 and shaft 6 1. Said arms 61 and 63 and shaft 6 L are rocked clockwise. This movement of the shaft 6-l rocks other elements of both trains of mechanisms, including the arm 65, link 66 and lever 60 of each train, thus opening the drawer 41.

The remaining elements of each of said trains of mechanisms includes an arm 68 (Fig. 1) provided with a cam slot 69 into which projects a roller 70. The rollers 7 0 are carried by the previously described arms 36.

The clockwise movement of the shaft 6 1 auses the cam slots 69 to rock the arms 36 counter-clockwise thus lowering the universal rod 35, thereby permitting all of the segments 31 to be operated, by their springs 3 1, under control of the amount keys 30.

T 0 tal'izer.

The totalizer consists of a plurality of wheels 32 (one only being shown) each (Fig. 1) having secured thereto a pinion mounted on a shaft 74: carried between a pair of arms 76 only one of which is shown. The totaliZer pinions 75 are normally engaged with. their actuating segments 77, but are adapted to be disengaged therefrom at the beginning of an operation of the machine, and before the segi'nents 31 begin to 'move under control of the amount keys. Each actuating segment; 77 is slidably mounted on a segment 31 for the purpose of permitting transfers to be made when any of the totalizer wheels move from nine to Zero as shown and described in the above mentioned Kettering and Chryst Patent No. 1,137,061. Therefore, it is not thought necessary to describe the transfer mecha nism herein. After the segment 77 has been positioned, the totalizcr wheels are restored to their home position, thereby adding the amounts into the totalizer wheels.

The closing of the cash drawer l1 also restores both of the previously described trains of o )erating mechanisms to their normal positions. As the drawer is being closed its rear end contacts the levers 60 and rocks them counter-clockwise to normal position, thereby causing the links 66 and arms 65 to rock the shaft 64 counter-clock lHl wise to normal position. This moves the arms" 68 and 36 and raises the rod 35 thus restoring the segments 31 and actuating segments 77 to their home positions.

The movement of the shaft 6 1 also rocks the arms '63 and ($1 counterclockwise thus tensioning the spring 38 for a subsequent operation.

Total'ize'r disengaging and engaging mecham'sm.

As above mentioned, the totalizer pinions are normally in engagement with its actuating segments 77. At the beginning of the operation of the machine, a pitman (Fig. 2), will cause the totalizer to be disengaged from the segments 77. The pitman is provided with a stud 81 which engages a notch in an arm 82 secured to a shaft 83, to which the arms 76, which support the totalizer wheels, are also secured. The pit man 80 is first raised by means of a camming pawl 84 carried on the lever 60. WVhen the drawer is released the camming pawl 8e engages a roller 85 on a lever 86 to which the pitman 80 is connected. The lever-86 is thus rocked in a clockwise direction, thus raising the pitman 80 and causing the totalizer pinions 75 to be disengaged from their actuating segments 77. Just before the lower end of the lever 60 reaches its foremost position, during the clockwise movement thereof on its stud 67, the camming pawl 8 f engages a roller 87 on the lever 86, thereby rocking said lever 86 counterclockwise thus causing the pitman 80 to be lowered to its normal position, and in this manner reengaging the totalizer pinion 75 with the segments 77. The segments 77 are adjusted during this clockwise movement of the lever 60, and restored for adding the amounts during the return or counter-clockwise movement of the lever 60.

Totalz'zer throwout mechanism.

During charge and paid out transactions 1t is desired to prevent amounts from being accumulated into the totalizer. As.

previously stated the totalizer pinions 75 normally engage the segments 77 but immediately upon release of the drawer, the pawl 8& causes the pitman 80 to be raised, thus disengaging the pinions from the segments 77. In order to prevent the reengagement of the totalizer pinions 7 5 with. the actuating segments 77, a bell crank (Fig. 2) is provided with a roller 96 which is adapted to'engage a cam slot 97 in the pitman 80 for disengaging the stud 81 from the notch in the arm 82 before the pitman 80 is lowered by the camming pawl 84. The movement of the bell crank 95 is controlled by the transaction bank differential controlling segment 31 (Fig. 7). This segment 31 for the transaction bank is provided with two studs 98. The upper stud 98 is adapted to be moved into the path of a nose 99 of a pawl 100, when the machine is operated with the charge key depressed, and the other stud 98 is adapted to be moved into the path of said nose 99, when the machine is operated with the paid out key de pressed. This pawl 100 pivoted on a stud 94 carried by an arm 101 secured to a shaft 102. These keys are not shown herein but reference may be had to Fig. 1 of the above mentioned Patent No. 1,137,061 for an illustration thereof. If neither of these two keys is depressed, neither of the studs 98 is positioned in. the path of, the nose 99 of the pawl 100 when the machine operated, and the pawl 100 is moved bodily toward the rear of the machine with the arm 101 which is rocked clockwise by the shaft 102. The shaft 102 is rocked by means of a so mental arm 103 (Figs. 1 and 7) secured to the cam shaft 64:. The shaft 0 1 rocks the arm 103 clockwise. Said arm has a cam slot entered by a pin on one arm of a bell crank 104 pivoted on a shaft 153. A link 106 connects the opposite arm of the bell crank to an arm fast on the shaft 102 to rock said shaft 102 and the arm 101 clockwise. This movement of the arm 101 is transmitted to a shaft 107 by means of a link 108 connected to the pawl 100. and an arm-109 fast on the shaft 107. The bell crank 95 (Fig. 2) is also secured to the shaft 107 and therefore, when the arm 101 and pawl 100 (Fig. 7) are moved toward the rear of the machine, the shaft 107' is rocked, thereby rocking the bell crank 95. If no stud 98 is in the path of the nose 99,

the pawl 100 moves bodily with the arm 101,

and said pawl does not turn on its pivot stud 9 1 and, therefore, the shaft 107' is rocked only a short distance in a counterclockwise direction. However, if one of the studs 98 is in the path of the nose 99 of the pawl 100, as the arm 101 is rocked clockwise the nose 99 engages the stud 98, and as the arm 101 continues to rock the pawl 100 is rocked counter-clockwise on its pivot stud 94:. This movement of the pawl 100, through the link 108 and arm 109 rocks the shaft 107 counter-clockwise a greater distance. It will be remembered that the arm 101 moves the link 108 a certain distance but when the pawl 100 is rotated relatively to the arm 101, the link 108 receives from said pawl an additional movement. This combined movement of the link 108, rocks the shaft 107 and bell crank 95 far enough to engage the roller 96 (Figs. 2 and 6) with the cam slot 97, thereby rocking the pitman 80 clockwise, with its lower end as the pivot point to disengage the stud 81 from the notch in the arm 82. The cam slot in the arm 103 is so timed that the bell crank 95 (Fig. 2) is not rocked to engage the roller 96 with the cam slot 97 until after the pitman 80 is raised to disengage the totalizer pinions from their actuating segments 77.

Before the bell crank 95 is rocked far enough to rock the pitman clockwise as just described, it is necessary to disengage a stud 183, carried by a pitman 182, from the portion 111 of the slot 184. The bell crank has a slot into which projects a pin 92 on the pitman 182. The counterclockwise movement of the bell crank 95 rocks the stud 183 into the elbow of the slot 184. Now as the roller 96 enters the cam slot 97 the pitman 80 is free to be rocked clockwise and a portion of the slot 184 engages the stud 183.

The bell crank 95 is also provided with a stud (Fig. 2), which is adapted to engage the upper side of an arm 116, also secured to the shaft 83. This prevents a spring plunger 117, which normally holds the totalizer in its engaged position, from engaging the totalizer with its actuators when the stud 81 is disengaged from the notch of the arm 82.

The stud 81 is now in the enlarged aperture in the arm 82, and as the pawl 84 engages the roller 87 to lower the pitman 80, the arm 82 and shaft 83 are not rocked. Therefore, the pinions 75 remain disengaged from the segments 77 so that the amount of the charge or paid out transaction is not accumulated upon thetotalizer wheels 32.

As the drawer 41 is closed, the drive shaft 64 is rotated counter-clockwise to normal position thus moving the arm 101, link 108 and bell crank 95 to normal. The pawl 84 rocks the lever 86 and raises the pitman 80 and the stud 81 again engages the notch in the arm 82 as the plunger 117 on the lever 60 restores the arms 116 and 82 to normal thus re-engaging the pinions 75 with their segments 77.

As the bell crank 95 completes its restoration it rocks the pitman 182 and moves the stud 183 into the portion 111 of the slot 184 thus holding the pitman 80 in normal position.

Amount Zeeg release mechanism.

Near the end of the operation of the machine, the detents 33 are lowered by a yoke 118 (Figs. 1 and 6), for releasing all of the amount keys. This yoke is rocked by a spring pressed pawl 119 (Fig. 2), pivoted on the arm 60, adapted to engage a roller 120 (Figs. 2 and 6), near the end of the operation of the machine, to rock a lever 121, thereby moving a link 122 toward the rear of the machine. The link 122 is held in engagement with a stud 123 on the yoke 118 by a stud 124 on the link 122 which enters a slot 125 in an arm 126. The arm 126 is normally held in the position shown in a manner to be hereinafter described.

l/Vhen the lever 60 is restored to normal position the pawl 119 restores the lever 121 and yoke 118 to their normal positions.

Full stroke mechanism.

A full stroke mechanism of the usual type is provided which compels a complete operation of the machine. This mechanism consists of a spring pressed pawl 130 (Fig. 2) pivoted on the lever 60, and cooperates with a bar 131 carried by the right side frame of the machine. The bar 131 is provided with a series of notches 132 with which the pawl 130 cooperates to prevent return of the lever 60 before the pawl has passed the last notch, whereupon a spring 133 causes the pawl to assume its normal position and during the return stroke of the lever 60, the pawl co-operates with the notches 132 to prevent forward movement of the lever 60 until after the lever has completed its rearward movement.

An arm 137 cooperates with a Z-bar 134, to prevent release of the drawer until after the pawl 130 comes into contact with the first notch 132. This arm 137 is pivoted on the bar 131 and is provided with an opening 135 into which projects a stud 136 carried by the beforementioned lever 86. As the lever 86 is rocked by the camming pawl 84 the stud 136 engages the inclined wall of the opening 135, thereby lifting the arm 137 out of the path of the Z-bar 134, thereby permitting the drawer to open.

Printing mechanism.

A printing segment (Fig. 5) is provided for each totalizer wheel 32. These segments are adjusted under control of the segments 31. Pivoted to each of the segments 31 is a beam 146 (Fig. 1) connected to an arm 147 by a link 148. The arms 147 are each secured to a shaft 149 to each of which is also secured an arm 150 (Fig. 5), connected to its corresponding type segment 145 by means of a link 151.

hen any one of the segments 31 (Fig. 1) is positioned under control of the amount keys 30 as before described, the forward end of the beam 146 is positioned accordingly. After the forward end is positioned an aliner (not shown) is rocked into engagement with the segment 31 to lock it in its adjusted position. After the segment is so locked, an arm 152 secured to a shaft 153 is rocked by the segmental arm 103 to cause one of the cam surfaces 154 of the arm 152 to engage a roller 155 carried by the beam 146, thereby positioning the rear end of the beam according to the position of its forward end. This movement is transmitted to the type segment 145, and in this manner adjusting it according to the position of the segment 31 as controlled by the amount key.

A platen. 156, over which the record ma- Hit) terial is fed, is rocked into engagement with the type segments 1 15, thereby causing an impression to be made. This impression mechanism is not shown or described herein but reference may be had to the above mentioned Patent No. 1,137,061.

After the impression is made the arm 103 restores the arm 152 to normal position and as the segment 31 is restored to normal, the left end of the beam 146, as viewed in Fig. 1, is likewise restored to normal position. The right end of the beam 1416 remains in the position to which it was adjusted thus permitting the type segments to remain in adjusted position until a subsequent operation.

Indicating mechanism.

Total taking mechanism.

The machine is adapted to print grand totals and sub-totals of the amount. stand-' ing on the totalizer. The mechanism for taking totals is controlled by a lever 170 (Figs. 2 and a), which has three positions of adjustment, namely, adding, sub-total and grand total. In machines of this type the tripped transfer devices are restored during the next succeeding cycle of operation, and

therefore it is always necessary to perform.

one idle operation before a total is printed. During this idle operation the indicators are also restored to zero. An interlock is pro vided which makes it impossible to move the total lever 170 out of its adding position until after all of the indicators have been set to zero thus compelling the operator to make said idle operation.

This total making mechanism consistsof an arm 171 (Fig. a), fast on a shaft 169 and provided with a roller which is held in contact with the inner surface of the segment 162 by means of a spring 172. When any one of the indicators is out of the Zero position, an arm 173 also fast on the shaft 169 and 7 having a flange 17a is held in the path of a flange 175 on the total lever. 1 However,

when all of the indicators aremoved to zero, the roller on the arm 171 is moved into a cut-away portion 176 of the segment 162, thereby lowering the flange 174E out of the path of the flange 175 thus permitting the operator to adjust the total lever 170.

The total lever 170 is provided with a knob 17 7 which projects through a slot in the cabinet (not shown) of the machine and is provided for adjusting the total lever. A spring operated alining pawl 178 cooperates with notches. 17 9 for holding the total lever in the position to which it is adjusted.

Then the total lever is moved to its first position out of adding position the mechanism is set for a sub-total operation. WVhen moving the total lever, a cam slot 180 therein, (Fig. 2), cooperates with a stud 181, to shift a pitman 182 toward the right (Fig. 2) and by means of a stud 183 projecting into the slot 18 1 in the pitman 80, disengages the stud 81 from the notch in the arm 82 thus moving the pitman 8O 1 into a neutral position.

Then, upon operation of the machine, when the ntman 1s raised the totalizer 311110115 i 1 (5 are not disengaged from the actuating segments 77 and therefore the totalizer controls the posit oning of the segments 77 and 31 in a manner to be presently described.

During the lowering or return movement of the pitman 80 the stud 81 remains disengaged from the notch inthe arm 82, and

therefore, during the entire operation of the machine, the totalizer pinions 75 are in engagement with the segments 77.

During all total taking operations, the totalizer pinions 75 controls the movement of the segments 31. 'Each pinion 75 is provided with a pin 188 (Fig. 8), whichengages a shoulder on an arm 190 to stop the rotation of the pinion 75 when the totalizer wheel 32 reaches the zero position, thereby preventing further rotation of its associated segment 31 in a clockwise direction, thus stopping the type and indicator segments in positions commensurate with the amount which was standing on the totalizer wheels. )Vhen the segments 31 are returned to their home position, during sub-total operations, this amount is again added on the totalizer wheels.

The type segments 145 and the indicators 160 are adjusted to set up and indicate the amount standing on the totalizer wheels in the same manner as during adding operations, and therefore no further description thereof-will be necessary.

When the total lever 170 is moved to its second position out of adding position, the pitman 182 of Fig. 2 is moved far enough to the right to disengage the stud 81 from the notch in the arm 82, and to engage a stud 191 on the pitman 80 with a notch 192 in the arm 116. During this latter movement of the pitman 80 by the pitman 182, the stud 191 engages the surface 193 and'the pitman 80 is thereby cammed upwardly until the stud 191 is engaged with the notch 192. This upward movement of the pitman 80 rocks the lever 86' clockwise far enough to move the roller out of the path of the qillfilnlng pawl 8a. Upon subsequent opera tion of the machine, the cumming pawl 84 has no effect upon the lever 86, until near the end of its forward movement, when it engages the roller 87, thereby lowering the pitman and disengaging the totalizer pinions 7 5 from its actuating segments 77. lVith the totalizer thus disengaged, and operation of the machine completed, the segments 81 and 77 are returned to their home positions, and the totalizer wheels are left standing at zero.

Keg release thrown at mechanism.

During total taking operations a mechanism (not shown herein) is provided for locking the detents 83 against movement in order to prevent depression of the amount keys. For this reason it is necessary to prevent movement of the key release mechanism during total taking operations. It will be remembered that the keys are released by rocking the yoke 118 by the link 122 (Fig. 6). WVhen the pitman 182 is moved toward the rear of the machine, upon adjustment of the total lever 170 (Fig. 5), a stud 19 1 on the pitman 182 cooperates with a cam slot 195 in the arm 126, and cams said arm 126 in a clockwise direction, thereby disengaging the link 122 from the stud 123, and in this manner preventing operation of the yoke 118.

I merZ 0 070.

An interlock is provided to prevent adj ustment of the total lever 170 after the machine has begun to operate, and to prevent depression of the release key 49 when the total lever is not exactly in one of its three positions of adjustment. This means includes an arm 200 fast to the arm 50, and having a stud 201 adapted to engage any one of the slots 202 in the total lever 170 when the total lever is in any of its three positions. If the total lever 170 is not exactly in any of the three positions, upon an attempted depression of the release key 19, the stud 201 engages the periphery of the total lever 170, thereby preventing complete depression of the release key 49. When, however, the total lever 170 is exactly in one of its positions of adjustment and the release key 49 is depressed, the stud 201 then enters one of the slots 202, and it is then impossible to adjust the total lever to any of its other positions until after the machine is operated and returnedhome, and the release key returned to its home position.

A device has been provided for preventing adjustment of the total lever 170 to any position other than adding position, unless the totalizer lid 203 is unlocked and opened. This lid has a projection 204: in the path of an arm 205 secured to a shaft 206 actuated by the arm 126. Before the total lever can be moved, the projection 2041 must be moved out of the path of the arm 205 so that the stood that it is not intended to confine the invention to the one form of embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

hat is claimed is:

1. In a machine of the class described, the combination of a totalizer, actuators there for, a member for disengaging and engaging the totalizer with the actuators, a. pitman for moving the member into an inefi'ective position for sub-total operations and into an eitective position for grand total operations, and a lever for controlling said pitman.

2. In a machine of the class described, the combination or a totalizer, actuators therefor, a member for disengaging and engaging the totalizer with the actuators, and a lever having a cam slot adapted to control the position of the member whereby said member is moved into an ineffective position during sub-total operations and into an effective position during grand-total operations.

3. In a machine of the class described, the combination of a totalizer, actuators therefor, a member for disengaging and engaging the totalizer with the actuators, a lever having a cam slot adapted to control the position, of the member whereby said member is moved into an ineffective position during sub-total operations and into an etlective position during grand-total operations, and. a pitman for transmitting movement from the lever to the member as determined by said cam slot.

4:. In a machine of the class described, the combination of a totalizer, actuators therefor, means for engaging and disengaging the totalizer with the actuators, a pitman for determining the position of said means, and a lever for shifting said pitman to an ineifective position and for moving said means to an ineffective position.

5. In a machine of the class described, the combination of a totalizer, actuators therefor, means for engaging and disengaging the totalizer with the actuators, a pitman for determining the position of said means, a lever for controlling the eiiectivity of said pitman, means for controlling the movement of the lever whereby the pitman is moved to an ineffective position after the totalizer has been disengaged, and a projection on said lever adapted to shift said first mentioned means to an ineffective position thereby pre venting re-engagement of the totalizer with the actuators.

6. In a machine of the class described, the combination of a totalizer, actuators there for, means for engaging and disengaging the totalizer with the actuators, a pitman, a stud 011 said pitman adapted to project into a slot in said means, a lever adapted to maintain the stud in engagement with said slot,

, a projection on said means having a cam slot,

a stud on said lever adapted to engage the cam slot, and means for controlling the movement of said lever whereby the first mentioned stud is disengaged from the slot, thereby pern'iitting the second mentioned stud to shift the means to ineffective position upon the engagement of the second mentioned stud with the cam slot.

7. In a machine of the class described, the combination of a totalizer, actuators therefor, a device for disengaging and engaging the totalizer with the actuators, means for controlling said device for adding and total taking operations, a differential mechanism, and means controlled by said diilerential mechanism for disconnecting said device from said means and for positioning said. device whereby the totalizer will not be engaged with the actuators.

8. In a machine of the class described, the combination of a totalizer, actuators therefor, a pitman for disengaging and engaging the totalizer with the actuators during adding and total taking operations, a lever operatively connected with said pitman for controlling its position, a differential mechanism, and means controlled by the differential mechanism for disconnecting the pitman from'said lever and for shifting said pitman into a position whereby the totalizer will not be engaged with its actuators during certain adding operations.

9. In a machine of the class described, the combination of a totalizer, actuators therefor, a pitman for disengaging and engaging the totalizer with the actuators, a lever for controlling the engagement of the totalizer during adding and total taking operations, a transaction differential mechanism, a bell crank controlled by said differential, con nections between said bell crank and said lever for controlling the pitman, said con nections being held in operative relation with said pitman during certain adding operations by said bell crank and adapted to be rocked out of operative relation with said pitm'an by said bell crank during other adding operations, and means on said bell crank for rocking said pitman into a position in which the totalizer will not be engaged with the actuators during other adding operations thereby preventing the addition of the amounts.

10. In a machine of the class described, the combination of a totalizer actuator, a totalizer normally in engagement therewith, a member normally in an effective position to disengage the totalizer from the actuator, means connected to said member and adapt ed to move said member into an ineiiective position for subtotal operations and into a second effective position for grand total opcrations, and a lever having a single slot to iove said member lnto its various positions. In testimony whereof I aflix my slgnature.

WILLIAM H. ROBERTSON. 

